If you need to download the Windows XP x86, start apup, click options and add a "2" (without quotes) after releases. When completed restart apup, click options, click default to return to the main list.

There are only the Italian and English versions available..

I don't understand.

I use APUP 1.4.43
KB931125 already checked in my system, but dated was March 2014..
I want to update to KB931125 (rootsupd) dated May 2015

Is it to late to download XP SP3 updates (Added the "2" after list). I just get errors when trying Autopatcher.

Thanks

Possibly! Microsoft may have pulled links for XP so you may get 0 byte files but you aren't clear what exactly the problems are. A log file of your attempt at downloading the XP release is critical here to determine if links are 404ing. If you're having issues with AP functioning on your system is another matter - some details would go a long way.